Hello all.....picked this up yesterday at a tag sale. I noticed a period after 45 and cannot find this embossing variant in the PG (I do not have the most recent PG). Has anyone else out there come across one of these? The rear dome has a large shop number six. This period exactly matches the other periods in size, so I do not think it is some random glob of glass that formed in that location. If anyone has any info or is interested in this piece, please contact me and we can come up with something. Thanks for looking.